/*上下左右居中*/
.main {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 120px;
}

.mainbackground {
    background: url("../../img/bg.jpg") no-repeat center;
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    -ms-background-size: cover;
    min-height: 100%;
    padding: 2em 0;
    position: relative;
    z-index: 1;
    justify-content: center;
    display: grid;
    grid-template-rows: auto;
    align-items: center;
}
.form-inner-cont {
    background: rgba(255,255,255,.2);
    border: 1px solid rgba(255,255,255,.3);
    -moz-box-shadow: 0 3px 0 rgba(12,12,12,.03);
    -webkit-box-shadow: 0 3px 0 rgba(12,12,12,.03);
    box-shadow: 0 3px 0 rgba(12,12,12,.03);
    -moz-border-radius: 3px;
    -webkit-border-radius: 3px;
    border-radius: 3px;
    padding: 20px;
}
